The Sandbox has disabled its SAND cross-chain bridges on Base and BNB Smart Chain after a security exploit, isolating the affected liquidity and warning holders not to trade the gaming token on those two networks while it investigates. The Sandbox said the incident did not affect SAND on Ethereum or Polygon, and the team said user wallets were not compromised.

What Triggered The Sandbox Bridge Halt

The Sandbox said it identified and contained a vulnerability in the SAND cross-chain bridge on Base and BNB Smart Chain, disabling bridging in both directions and isolating the affected tokens, according to its official statement on X. For related coverage, see Term Finance Loses Estimated $8.5M in Governance Exploit.

The exploit created a flood of unbacked SAND on the two networks. Blockchain security firm Blockaid estimated that roughly $49 billion in nominal face-value unbacked SAND was minted across more than 400 transactions during the incident, as reported by CoinDesk on August 22, 2026. For related coverage, see Robinhood CEO Advocates Tokenized Trading to Prevent Market Halts.

That figure reflects tokens created on-chain, not realizable value. The Sandbox described the actual scope more narrowly, saying the contained incident represented less than 0.01% of the total SAND supply and did not affect the token on Ethereum or Polygon.

Security tracker PeckShield reported approximately 14.9 billion SAND minted across two addresses during the event, according to unconfirmed alerts circulated by PeckShield. The Sandbox has not released a full technical breakdown of the exploit mechanics, and the analysis remains preliminary.

How The Sandbox Responded And What Users Should Know

With bridging paused, SAND cannot move between Base or BNB Chain and the token’s home networks. The Sandbox has told users not to buy, sell, or trade SAND on the two affected chains because their liquidity was compromised. For ordinary holders, that means any SAND held in Base or BNB Chain pools or wallets is effectively frozen for transfer until service is restored.

The Sandbox said it took a pre-incident snapshot and is preparing a compensation plan for affected liquidity pool users, with a full incident report promised, according to an exchange flash summary of its remediation steps. That snapshot should help define which positions are eligible if the team’s remediation plan is later implemented, but The Sandbox has not yet provided the final terms.

Centralized exchanges moved quickly. Bithumb suspended SAND deposits and withdrawals at 11:11 a.m. Korea time on August 22, 2026, and Upbit followed one minute later as a precaution, Coinpaper reported. The exchanges cited security concerns under South Korea’s Virtual Asset User Protection Act. No regulator enforcement action has been identified.

What is confirmed: Ethereum and Polygon SAND is unaffected and no wallets were drained. What remains open: the exact exploit vector, the timeline for restoring the Base and BNB Chain bridges, and the final shape of the liquidity pool compensation.

Why This Matters For Cross-Chain Risk Around SAND

Bridges are the infrastructure that allows a gaming asset like SAND to circulate across chains, and pausing two of them fragments where the token can trade. That matters not just for liquidity, but for how quickly market infrastructure can force exchanges, traders, and data providers to react when a bridge is disrupted. Despite the incident, SAND traded at $0.0449, up about 2.9% over 24 hours, with a market capitalization near $131.9 million during the incident window.

The gap between a $49 billion nominal mint and a nine-figure market cap highlights the key lesson: exploit-driven cross-chain mints can badly distort third-party data feeds even when realizable loss is minimal. Broader market sentiment remained risk-on, with the Fear & Greed Index reading 73, or “Greed.”

The pattern resembles other 2026 infrastructure incidents, including Taiko halting block production after an exploit alert, Base tracing back-to-back mainnet outages to a sequencer bug, and BounceBit winding down its L1 after an exploit. For SAND holders, the main checkpoints are The Sandbox’s promised incident report, the liquidity pool compensation rollout, and confirmation that the Base and BNB Chain bridges have reopened.

Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.